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Philydraceae A family of monocotyledonous (see MONOCOTYLEDON), erect, rhizomatous (see RHIZOME) herbs, which have 2-ranked, sheathing, linear leaves, clustered or in a basal rosette. The flowers are solitary, irregular, and bisexual, with a single stamen. The ovary is superior with 3 fused carpels forming a single locule with numerous ovules. The style is simple. The fruit is a capsule, with many seeds which contain endosperm. There are 4 genera, and 5 species, restricted in their distribution to Japan, South-east Asia, and Australia.